Features of Designing Computer Control Systems for Precision Thermoelectric Coolers

An effective electrical circuit and an operating algorithm have been developed, and a working sample of a thermoelectric precision thermostat has been designed with the possibility of autonomous operation, continuous monitoring and recording of the temperature log using a computer or smartphone. It is shown that the developed algorithm provides effective shockless control and an accuracy of maintaining the temperature of 0.03°C, with a power consumption of 3-7 W. A design and a specialized computer control system for a multistage cryogenic thermoelectric cooler have been developed.

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Teaching Reform and Practice of Computer Control System

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.765-767.858 ◽

2013 ◽

Vol 765-767 ◽

pp. 858-862

Author(s):

Yu Zhang ◽

Feng Liu ◽

Chuan Lin Zheng

Keyword(s):

Control System ◽

Control Systems ◽

Computer Control ◽

Teaching Quality ◽

Traditional Teaching ◽

Computer Control System ◽

Teaching Process ◽

Teaching Reform ◽

New Methods

Computer Control Systems course is a key course for undergraduates majored in Automation in Southwest University of China. Some problems exist in the teaching process. Problems were listed and analyzed in detail. To solve problems and improve teaching quality, traditional teaching was reformed and new methods were introduced for course teaching. These methods were put into practice in the teaching process. The result shows that the teaching reform of the course helps to solve some problems; undergraduates devote into learning more than before; and the operation ability and innovation consciousness of the students are improving.

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Recent Developments on Gas Turbine Control Systems

Journal of Engineering for Power ◽

10.1115/1.3230245 ◽

1980 ◽

Vol 102 (2) ◽

pp. 249-256

Author(s):

P. D. Greenhalf

Keyword(s):

Control Systems ◽

Gas Turbine ◽

Gas Turbines ◽

Computer Control ◽

Computer Control System ◽

Component Selection ◽

Recent Developments ◽

Hostile Environments ◽

And Control ◽

Ancillary Equipment

The paper briefly outlines some of the activities undertaken on gas turbine logic and control systems. The frequent requirement for gas turbines to operate in polluted hostile environments has encouraged the development of ancillary equipment which will reliably withstand onerous site conditions. The design requirements, philosophy, component selection and progress made on fuel control and solid state logic systems, specifically introduced to meet arduous service requirements are reviewed. A computer control system designed for more temperate environments is also examined, enabling a comparison of the theoretical reliabilities of the respective systems to be assessed when installed on gas compressor applications.

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Study On The Application Of Thermoelectric Coolers Inside Unmanned Surface Vehicles

Journal of Advanced Research in Fluid Mechanics and Thermal Sciences ◽

10.37934/arfmts.82.1.1220 ◽

2021 ◽

Vol 82 (1) ◽

pp. 12-20

Author(s):

Nadhilah ◽

Muhammad Arif Budiyanto ◽

Alif Hikmah Fikri ◽

Hanmah Ayuningtyas

Keyword(s):

Control Systems ◽

Heat Loss ◽

Electric Motor ◽

Propulsion System ◽

Autonomous Control ◽

Thermoelectric Cooler ◽

Electric Motors ◽

Unmanned Surface Vehicle ◽

Thermoelectric Coolers ◽

Unmanned Surface Vehicles

The development of unmanned surface vehicles for military and commercial needs is increasing as the development of autonomous control systems. The farther the operation range of unmanned surface vehicles makes the propulsion motor generated heat and decreased the performance of the vehicle. This study aims to analyze the application of a thermoelectric cooler to decrease the temperature of the electric motors as a propulsion system on the unmanned surface vehicle. The research was carried out by prototyping the thermoelectric cooler 12V and tested at the prototype of unmanned surface vehicles with a length overall 1.5 m. The results showed the application of a thermoelectric cooler potentially effective to decrease the electric motor temperature by as much as 26.3 ?C by neglect the heat loss due to convection. The results of this study contributed to the development of reliable unmanned surface vehicles.

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A computer-control program for TEM in situ fatigue experiments

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100155074 ◽

1989 ◽

Vol 47 ◽

pp. 620-621

Author(s):

Kenneth S. Vecchio ◽

John A. Hunt

Keyword(s):

Slow Crack Growth ◽

Computer Control ◽

Control Program ◽

Video Tape ◽

Computer Control System ◽

Transmission Electron ◽

In Situ Experiments ◽

Tremendous Amount ◽

And Control

In-situ experiments conducted within a transmission electron microscope provide the operator a unique opportunity to directly observe microstructural phenomena, such as phase transformations and dislocation-precipitate interactions, “as they happen”. However, in-situ experiments usually require a tremendous amount of experimental preparation beforehand, as well as, during the actual experiment. In most cases the researcher must operate and control several pieces of equipment simultaneously. For example, in in-situ deformation experiments, the researcher may have to not only operate the TEM, but also control the straining holder and possibly some recording system such as a video tape machine. When it comes to in-situ fatigue deformation, the experiments became even more complicated with having to control numerous loading cycles while following the slow crack growth. In this paper we will describe a new method for conducting in-situ fatigue experiments using a camputer-controlled tensile straining holder.The tensile straining holder used with computer-control system was manufactured by Philips for the Philips 300 series microscopes. It was necessary to modify the specimen stage area of this holder to work in the Philips 400 series microscopes because the distance between the optic axis and holder airlock is different than in the Philips 300 series microscopes. However, the program and interfacing can easily be modified to work with any goniometer type straining holder which uses a penrmanent magnet motor.

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